ESky 900 (aka ES500)
Specifications

(1). Length: 845mm
(2). Height: 311mm
(3). Main rotor length: 425mm  
(4). Main rotor diameter: Φ929mm
(5). Tail rotor diameter: Φ176mm
(6). Body Weight: about 850g
(7). Motor gear: 15T
(8). Master gear:133T
(9). Tail drive gear: 108T
(10). Tail driven gear: 24T
(11). Drive ratio: 8.87:1:4.5
Equipment Needed

(1). Brushless motor: above Φ35*41.5mm
(2). ESC: Above 60A
(3). Receiver: 6CH
(4). Transmitter: 6CH
(5). Head lock gyro
(6). Battery: above 14.8V 2000mAh
(7). Servo: (4) Standard Size servos above 36g
Available for $139.95 at
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The ESky 900 is a 500 size RC Heli that ESky started
developing when the first decided to discontinue the
E-Smart. The production of this heli was delayed for
almost a year. Its a nice heli but unfortunately ESky
missed the boat with this heli. There are much better helis
available at or below the cost of this kit. And parts
availability is bad as there are only a few retailers carrying
this heli and its parts. I like it but don't recommend it.